These outdoor bleachers are built for a lifetime of dependable, troublefree sports seating.Weatherbeater bleachers come with recycled plastic ground runners to keep support framework raised from grass or dirt.Recycled runners will not rot like wood runners used by other manufacturers.Heavyduty 2" x 10" anodized aluminum seat planks.Hot dip galvanized welded support structures.Planks have end caps for a finished look without sharp edges.High grade zinc plated hardware.Upgrade to color powder coated seat planks.Fiveyear limited warranty on structure, twoyear limited warranty on planks.